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HTML Tidy

HTML Tidy is a HTML linter. For more info on this algorithm, please see:

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List of the Tidy errors

Error id Link to the error description (en-US) de-DE
Tidy_1 entity "..." doesn't end in ';' Tidy_1_DE
Tidy_2 numeric character reference "..." doesn't end in ';'
Tidy_3 unescaped & or unknown entity "..." Tidy_3_DE
Tidy_4 unescaped & which should be written as &
Tidy_5 named entity ' only defined in XML/XHTML
Tidy_6 missing </...>
Tidy_7 missing </...> before ...
Tidy_8 discarding unexpected ...
Tidy_9 nested emphasis ... (Notice)
Tidy_10 replacing unexpected ... by </...>
Tidy_11 ... isn't allowed in <...> elements
Tidy_12 missing <...>
Tidy_13 unexpected </...> in <...>
Tidy_14 using <br> in place of ...
Tidy_15 inserting implicit <...>
Tidy_16 missing quote mark for attribute value
Tidy_17 inserting missing 'title' element
Tidy_18 repeated FRAMESET element
Tidy_19 ... can't be nested
Tidy_20 replacing obsolete element ... by ...
Tidy_21 ... is not approved by W3C
Tidy_22 ... is not recognized!
Tidy_23 trimming empty ...
Tidy_24 <...> is probably intended as </...>
Tidy_25 ... shouldn't be nested
Tidy_26 ... not inside 'noframes' element
Tidy_27 content occurs after end of body
Tidy_28 HTML DOCTYPE doesn't match content
Tidy_29 adjacent hyphens within comment
Tidy_30 expecting -- or >
Tidy_31 XML comments can't contain --
Tidy_32 '<' + '/' + letter not allowed here
Tidy_33 HTML namespace doesn't match content
Tidy_34 isn't allowed after elements
Tidy_35 discarding malformed
Tidy_36 unexpected end of file ...
Tidy_37 SYSTEM, PUBLIC, W3C, DTD, EN must be upper case
Tidy_38 too many ... elements in <...>
Tidy_39 unescaped ... in pre content
Tidy_40 nested q elements, possible typo.
Tidy_41 ... element not empty or not closed
Tidy_42 Output encoding does not work with standard output
Tidy_43 -
Tidy_44 missing <!DOCTYPE> declaration
Tidy_45 removing whitespace preceding XML Declaration
Tidy_46 too many ... elements in <...>
Tidy_47 unexpected </...> in <...>
Tidy_48 ... unknown attribute "..."
Tidy_49 ... inserting "..." attribute
Tidy_50 ... attribute "..." lacks value
Tidy_51 ... attribute "..." has invalid value "..."
Tidy_52 ... missing '>' for end of tag
Tidy_53 ... proprietary attribute "..."
Tidy_54 ... proprietary attribute value "..."
Tidy_55 ... dropping value "..." for repeated attribute "..."
Tidy_56 ... should use client-side image map
Tidy_57 ... has XML attribute "..."
Tidy_58 ... unexpected or duplicate quote mark
Tidy_59 ... attribute with missing trailing quote mark
Tidy_60 ... id and name attribute value mismatch
Tidy_61 ... URI reference contains backslash. Typo?
Tidy_62 ... converting backslash in URI to slash
Tidy_63 ... improperly escaped URI reference
Tidy_64 ... escaping malformed URI reference
Tidy_65 ... discarding newline in URI reference
Tidy_66 ... anchor "..." already defined
Tidy_67 -
Tidy_68 ... joining values of repeated attribute "..."
Tidy_69 ... unexpected '=', expected attribute name
Tidy_70 ... attribute value "..." must be lower case for XHTML
Tidy_71 ... ID "..." uses XML ID syntax
Tidy_72 ... attribute name "..." (value="...") is invalid
Tidy_73 ... attribute "..." had invalid value "..." and has been replaced
Tidy_74 ... cannot copy name attribute to id
Tidy_75 ... end of file while parsing attributes
Tidy_76 ... invalid character code ...
Tidy_77 ... invalid character code ...
Tidy_78 ... invalid UTF-8 bytes (char. code ...)
Tidy_79 ... invalid UTF-16 surrogate pair (char. code ...)
Tidy_80 specified input encoding (...) does not match actual input encoding (...)
Tidy_81 -
Tidy_82 ... invalid numeric character reference ...
Tidy_83 replacing ... by ...
Tidy_84 replacing unexpected ... by ...
Tidy_85 <...> is probably intended as </...> Tidy_85_DE
Tidy_86 ... lacks "..." attribute
Tidy_87 ... is not a reserved word
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